Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Rheostat control Cascade control Pole changing Combination of cascade and pole changing Rheostat control Cascade control Pole changing Combination of cascade and pole changing ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Tractive effort is required to Accelerate the train mass Overcome the gravity component of train mass All of the listed here Overcome friction, windage and curve resistance Accelerate the train mass Overcome the gravity component of train mass All of the listed here Overcome friction, windage and curve resistance ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Long distance railways use which of the following? 200 V D.C. 25 kV single phase A.C. 25 kV two phase A.C. 25 kV three phase A.C. 200 V D.C. 25 kV single phase A.C. 25 kV two phase A.C. 25 kV three phase A.C. ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Locomotives with monometer bogies have Low coefficient of adhesion Suitability for passenger as well as freight service Lot of skidding Uneven distribution of tractive effect Low coefficient of adhesion Suitability for passenger as well as freight service Lot of skidding Uneven distribution of tractive effect ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Locomotive having mono-motor bogies All of the listed here Has better coefficient of adhesion Has better riding qualities due to the reduction of lateral forces Are suited both for passenger as well as freight service All of the listed here Has better coefficient of adhesion Has better riding qualities due to the reduction of lateral forces Are suited both for passenger as well as freight service ANSWER DOWNLOAD EXAMIANS APP
Electric Traction In case of steam engines the steam pressure is 1 to 4 kgf/cm² 10 to 15 kgf/cm² 5 to 8 kgf/cm² 25 to 35 kgf/cm² 1 to 4 kgf/cm² 10 to 15 kgf/cm² 5 to 8 kgf/cm² 25 to 35 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
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